【cocos2d-x】不同方向运动的小球

李掌柜

这个帖子是笔记，有想用C或C++语言开发游戏的可以加这个
掌柜的创的Cocos2d-x 学习群：153412944

资源图片：


这张图片没有扣图，有点小遗憾！

C++代码：

//Ball.h
#ifndef __BALL_H__
#define __BALL_H__
#include "cocos2d.h"
using namespace cocos2d;
class Ball : public Sprite
{
public:
    virtual bool init();
    virtual void update(float dt);
    CREATE_FUNC(Ball);
private:
    float speedX, speedY;
};
#endif
//Ball.cpp
#include "Ball.h"
bool Ball::init()
{
    Sprite::initWithFile("ball.jpg");
    speedX = CCRANDOM_0_1()*10-5;
    speedY = CCRANDOM_0_1()*10-5;
    scheduleUpdate();
    return true;
}
void Ball::update(float dt)
{
    setPosition(getPositionX() + speedX, getPositionY() + speedY);
}
//HelloWorldScene.cpp
#include "HelloWorldScene.h"
#include "cocostudio/CocoStudio.h"
#include "ui/CocosGUI.h"
#include "Ball.h"
USING_NS_CC;
using namespace cocostudio::timeline;
Scene* HelloWorld::createScene()
{
    // 'scene' is an autorelease object
    auto scene = Scene::create();

    // 'layer' is an autorelease object
    auto layer = HelloWorld::create();
    // add layer as a child to scene
    scene->addChild(layer);
    // return the scene
    return scene;
}
// on "init" you need to initialize your instance
bool HelloWorld::init()
{

    if ( !LayerColor::initWithColor(Color4B(255,255,255,255)) )
    {
        return false;
    }

    Size visibleSize = Director::getInstance()->getVisibleSize();
    Vec2 origin = Director::getInstance()->getVisibleOrigin();
    for (int i = 0; i < 30; i++)
    {
        auto b = Ball::create();
        b->setPosition(CCRANDOM_0_1()*200 + 100,CCRANDOM_0_1()*200 + 100);
        addChild(b);
    }
    return true;
}